Public bug reported:
lspci output:
08:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Bonaire XTX [Radeon R7 260X/360] [1002:6658]
dmesg error output:
[drm:cik_ring_test [radeon]] *ERROR* radeon: ring 0 test failed
(scratch(0x3010C)=0xCAFEDEAD)
radeon 0000:08:00.0: disabling GPU acceleration
kernel parameters with issue:
quiet splash amd_iommu=on mem_encrypt=on
Issue appears on kernels 5.4.0-26-generic 5.4.0-40-generic
5.4.0-42-generic 5.6.0-1021-oem
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
** Package changed: ubuntu => xserver-xorg-video-ati (Ubuntu)
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https://bugs.launchpad.net/bugs/1892093
Title:
mem_encrypt=on makes radeon driver crash during startup
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